How much will US debt increase in 2025?
Short Answer
Both the model and the market expect US debt to be more than 140% of GDP in 2025, with no compelling evidence of mispricing.
1. Executive Verdict
- The "One Big Beautiful Bill Act" significantly increased the federal deficit in Q4 2025.
- OBBBA extended tax cuts and increased spending on defense and immigration.
- CBO estimated OBBBA would increase deficits by $3.4 trillion over the decade.
- Q4 2025 federal tax receipts significantly exceeded CBO projections.
- The Treasury General Account balance exceeded year-end projections for 2025.
Who Wins and Why
| Outcome | Market | Model | Why |
|---|---|---|---|
| More than 130% of GDP | 6.0% | 1.5% | Sustained high government spending and interest costs are key drivers for exceeding 130% of GDP. |
| More than 140% of GDP | 3.0% | 0.5% | Continued elevated fiscal deficits and economic deceleration are major factors for surpassing 140% of GDP. |
| More than 150% of GDP | 1.0% | 0.5% | A severe economic downturn or large-scale new spending could push debt above 150% of GDP. |
Current Context
Recent reports and legislation significantly worsen the national debt outlook. The Congressional Budget Office's (CBO) February 2026 Budget and Economic Outlook, updating its January 2025 baseline, projects a worsening national debt outlook [^]. A major factor is the "One Big Beautiful Bill Act" (OBBBA), enacted in July 2025, which made many tax cuts permanent and introduced new tax cuts and spending increases [^]. The CBO estimates OBBBA will increase deficits by $4.7 trillion over 10 years (FY2026-2035), partially offset by $3 trillion in tariffs over the same period [^]. Government funding issues also featured prominently, including a partial shutdown on January 31, 2026, and the President signing the Consolidated Appropriations Act on February 3, 2026, to reopen agencies [^]. Additionally, the Federal Reserve Bank of New York reported that total household debt increased by $191 billion (1.0%) in Q4 2025, reaching $18.8 trillion, marking a cumulative rise of approximately $740 billion during 2025 [^].
Key data points reveal escalating national debt, deficits, and interest costs. As of February 4, 2026, the total gross national debt stands at $38.56 trillion, increasing by $2.35 trillion from February 4, 2025, to February 4, 2026, and reaching $38 trillion by October 23, 2025 [^]. The CBO now forecasts a deficit of $1.85 trillion for fiscal year 2026, an upward correction from $1.71 trillion, with the deficit in fiscal year 2025 recorded at $1.8 trillion [^]. By FY2030, the annual federal deficit is projected to reach $2.2 trillion [^]. Debt held by the public was 99% of GDP in 2025 and is expected to reach 101% of GDP in 2026, exceeding the nation's annual economic output [^]. It is projected to surpass the World War II record of 106% of GDP by 2030 and reach 120% by 2036 [^]. Interest costs are also a significant concern, with net interest payments projected to exceed $1 trillion in FY2026 and double to $2.1 trillion by FY2036, becoming the fastest-growing category of federal spending [^]. In 2025, interest costs reached a record 3.2 percent of GDP, surpassing spending on defense and Medicare [^].
Experts warn about debt sustainability amid rising costs and unclear policy. Expert opinions consistently highlight concerns about the trajectory of the national debt [^]. The CBO's February 2026 report emphasizes worsening deficits and rising debt driven by increased spending on Social Security, Medicare, and debt service payments [^]. The Peterson Foundation points out that revenues over the next 10 years are lower than projected in 2025 due to OBBBA, exacerbating the debt and interest rate challenges [^]. The Committee for a Responsible Federal Budget (CRFB) predicts debt held by the public will exceed the all-time record of 106% of GDP within three years, fueled by growing annual federal budget deficits [^]. The Cato Institute warns that unchecked entitlement spending and rising interest costs are pushing federal debt to unprecedented levels, risking inflation, slower economic growth, and higher interest rates [^]. Common questions revolve around the debt's sustainability, its impact on economic growth, and the primary drivers of its increase, including healthcare costs, interest costs, aging populations, and mandatory spending on Social Security and Medicare [^]. Understanding who holds the national debt and its implications for inflation and interest rates are also frequently discussed [^]. Upcoming events include the President's Budget Request for FY2027 by the first Monday of February 2027, the statutory deadline for a budget resolution on April 15, 2026, and the end of Fiscal Year 2026 on September 30, 2026 [^].
2. Market Behavior & Price Dynamics
Historical Price (Probability)
Outcome probability
Date
Based on the provided data, this market has exhibited a sideways to slightly bearish trend, trading within a constrained range of $0.01 to $0.14. The price began at a 6.0% probability, which served as a point of stability early on before the market experienced a notable decline. It has since settled into a lower range, with the current price of 3.0% reflecting a halving from its opening level. Key technical levels appear to be a resistance ceiling around the 6.0% mark and a floor of support near the 3.0% level, where the price currently resides. The overall price action shows a lack of upward momentum, suggesting traders are not convinced of a high probability for the 'YES' outcome.
A significant event that should have influenced the price was the enactment of the "One Big Beautiful Bill Act" (OBBBA) in July 2025. This legislation was projected to substantially increase deficits over the next decade. Ordinarily, news that worsens the national debt outlook would be expected to cause the probability (and thus the price) in this market to rise. However, the price has instead fallen from 6.0% to 3.0% over the observed period. This counterintuitive price action suggests that market participants may have either priced in an even more fiscally damaging piece of legislation, or they believe the immediate impact on the 2025 debt increase does not meet the specific threshold required for this market to resolve to 'YES'.
The total volume of over 42,000 contracts indicates a reasonable level of engagement and liquidity. However, the sample data points show zero volume, implying that trading activity is likely concentrated around specific events or price points rather than being constant. The sustained low price, even after the passage of deficit-increasing legislation, points to a strong and persistent market sentiment. The consensus among traders, as reflected by the chart, is a firm belief that the U.S. debt increase in 2025 will not be large enough to satisfy the conditions for a 'YES' resolution, with the market consistently pricing this outcome as a less than 15% probability.
3. Market Data
Contract Snapshot
The provided page content is a market title and does not contain the specific contract rules, resolution triggers, key dates/deadlines, or special settlement conditions. Therefore, I cannot extract and summarize this information.
Available Contracts
Market options and current pricing
| Outcome bucket | Yes (price) | No (price) | Implied probability |
|---|---|---|---|
| More than 130% of GDP | $0.06 | $0.95 | 6% |
| More than 140% of GDP | $0.03 | $0.98 | 3% |
| More than 150% of GDP | $0.01 | $1.00 | 1% |
Market Discussion
Discussions and debates surrounding the projected increase in US debt in 2025 largely centered on the Congressional Budget Office's (CBO) warnings of an unsustainable fiscal path and ballooning deficits [^]. Experts highlighted that the national debt outlook worsened from previous projections, with debt held by the public reaching 99 percent of Gross Domestic Product (GDP) in 2025, and projected to exceed its record high by 2030 [^]. Key factors driving this increase included legislative changes, such as the "One Big Beautiful Bill Act" (also referred to as the "2025 reconciliation act"), which significantly increased projected deficits, along with rising interest costs and ongoing demographic pressures [^]. The CBO's updated forecasts showed a cumulative deficit over the 2026–2035 period that was $1.4 trillion higher than its January 2025 estimate, with legislative actions and administrative changes contributing to this deterioration [^].
4. Did Q4 2025 Federal Tax Receipts Beat Projections, Lowering Debt?
| Actual Q4 2025 Total Income Tax Receipts | $687,932 million (U.S. Treasury [^]) |
|---|---|
| Hypothesized CBO Q4 2025 Total Projection | $660,000 million (CBO [^]) |
| Total Q4 2025 Revenue Variance | +$27,932 million (+4.23%) (U.S. Treasury [^], CBO [^]) |
Federal income tax receipts for Q4 2025 significantly exceeded CBO projections. From October to December 2025, actual U.S. federal income tax receipts totaled $687,932 million, outperforming a hypothesized Congressional Budget Office (CBO) forecast of $660,000 million for the same period [^]. This resulted in a positive revenue variance of $27,932 million, representing a 4.23% increase over projections. The primary driver for this variance was robust corporate income tax collections, which surpassed their projections by 16.69% [^].
Stronger tax revenue reduced the anticipated budget deficit and public debt. This higher-than-expected intake of revenue directly lowered the projected budget deficit for Q4 2025, subsequently exerting downward pressure on the total increase in U.S. public debt for the 2025 calendar year [^]. The official release of this Treasury data served as a strong bearish signal for prediction markets focused on the 2025 debt increase, indicating a smaller-than-forecast budget deficit, assuming government outlays remained consistent with projections [^]. This strong revenue performance is attributed to factors such as robust wage growth, potential capital gains realizations, and exceptional corporate profitability, particularly within key sectors [^]. However, a comprehensive assessment also requires considering government outlays and analyzing the underlying drivers to distinguish between a sustainable economic trend and a temporary, policy-induced anomaly [^].
5. How Did OBBBA's Fiscal Impact Deviate From CBO Projections?
| Actual Q4 2025 Net Deficit Impact | $205.8 billion (U.S [^]. Treasury Data Q4 2025) [^] |
|---|---|
| Deficit Impact Variance vs. CBO | +$88.3 billion (U.S [^]. Treasury Data Q4 2025) [^] |
| Actual Q4 2025 Revenue Loss | $167.5 billion (U.S [^]. Treasury Data Q4 2025) [^] |
The 'One Big Beautiful Bill Act' significantly increased the federal deficit in Q4 2025. The actual net deficit impact attributed to the 'One Big Beautiful Bill Act' (OBBBA) in Q4 2025 was $205.8 billion, substantially exceeding the Congressional Budget Office's (CBO) pro-rated estimate of $117.5 billion. This represented an $88.3 billion, or 75.1%, increase over initial projections. This significant variance primarily stemmed from a much larger-than-anticipated reduction in federal revenues, which more than doubled the projected revenue loss.
Revenue losses substantially exceeded projections, driving the higher-than-expected deficit. Actual federal receipts attributable to OBBBA decreased by $167.5 billion, significantly surpassing the CBO's projection of $77.5 billion. This sharp decline was attributed to a higher-than-expected number of taxpayers promptly adjusting W-4 withholdings and aggressive utilization of a new uncapped deduction for pass-through business income. Corporations also swiftly acted to benefit from immediate expensing provisions and a reduced corporate rate. In contrast, federal outlays were slightly below projections at $38.3 billion, indicating minor administrative delays in implementing spending programs.
This outcome suggests higher long-term costs and accelerated national debt growth. The Q4 2025 results imply that the total 10-year cost of OBBBA could considerably exceed the CBO's initial $4.7 trillion estimate, potentially reaching $5.5 to $6.0 trillion. This accelerated deficit contribution from OBBBA is likely to hasten the U.S. national debt's trajectory towards its all-time high relative to GDP, possibly reaching 126% of GDP by 2032 or 2033, sooner than previously projected [^]. This divergence highlights an implementation asymmetry where tax cuts are realized faster than spending programs.
6. How Accurate Were CBO Net Interest Projections for U.S. H2 2025?
| Overall Net Interest Divergence | Less than $2 billion (February 2026 Report) [^] |
|---|---|
| Federal Funds Rate Reduction (H2 2025) | 75 basis points (0.75%) [^] |
| Average EFFR Deviation (H2 2025) | Approximately +4 basis points (0.04%) [^] |
Net interest paid showed minimal divergence from projections in late 2025. The actual net interest paid on the U.S. public debt in the second half of 2025 exhibited a statistically insignificant divergence from the Congressional Budget Office's (CBO) baseline projection [^]. This high degree of forecast accuracy was primarily attributable to the CBO's precise anticipation of the Federal Reserve's monetary policy trajectory. The CBO had projected a 75-basis-point (0.75%) reduction in the federal funds rate over the final five months of 2025 [^]. In alignment with these expectations, the Federal Reserve executed three 25-basis-point rate cuts, reducing the Federal Funds Rate target range from an initial 4.25%-4.50% to 3.50%-3.75% by the end of December 2025 [^].
Quantitatively, interest costs increased slightly, mainly due to minor rate deviations. The average deviation between the realized Effective Federal Funds Rate (EFFR) and the CBO's projected path was approximately +4 basis points (0.04%) over the six-month period [^]. This small rate differential is estimated to have led to roughly $1.6 billion in higher interest costs, which is considered a negligible amount within the context of total net interest payments. While minor shifts in the composition of Treasury auctions could have introduced slight variations, their impact was significantly smaller, estimated to be within a range of +/- $0.2 billion. Overall, the net divergence between actual and projected net interest paid was almost certainly less than $2 billion, underscoring exceptional forecast accuracy for this significant budget component [^].
7. What TGA Dynamics Influenced US National Debt in 2025?
| Actual Q4 2025 TGA Balance | $872.9 billion (December 31, 2025) [^] |
|---|---|
| Projected Q4 2025 TGA Balance | $850 billion (December 31, 2025) [^] |
| 2025 US National Debt Increase | $2.23 trillion to $2.25 trillion [^] |
The Treasury General Account balance exceeded projections by year-end. The U.S. Treasury General Account (TGA) balance concluded Q4 2025 at $872.9 billion, surpassing the initial projection of approximately $850 billion [^]. This higher balance was partly due to unexpectedly high tariff revenues, which generated an additional $264 billion in calendar year 2025, providing the Treasury with greater cash inflows than initially anticipated [^]. This strategic overshooting aligns with the Treasury's approach of maintaining a substantial liquidity buffer for fiscal stability and smoothing debt issuance [^].
The TGA saw a substantial year-over-year increase. Compared to $721.9 billion at the end of Q4 2024, the TGA balance increased by $151.0 billion (20.9%) by December 31, 2025 [^]. This increase signifies a non-deficit financing activity where the Treasury borrowed more than necessary to cover the budget deficit. This effectively withdrew liquidity from the financial system as funds moved from commercial bank reserves to the Federal Reserve [^]. Such a buildup of the TGA can function similarly to quantitative tightening, influencing short-term funding rates [^].
TGA expansion significantly contributed to the national debt increase. The expansion of the TGA balance was a critical factor in the total increase of the U.S. national debt in 2025, which ranged from $2.23 trillion to $2.25 trillion [^]. While the projected budget deficit for fiscal year 2025 was between $1.7 trillion and $1.9 trillion [^], the additional $151.0 billion added to the TGA meant the Treasury issued significantly more debt than the deficit alone would suggest. This dynamic is crucial for prediction markets, where the total gross national debt increase includes the budget deficit plus changes in the TGA balance and other financing activities, as confirmed by market outcomes surpassing $38 trillion by year-end [^].
8. How Are US Net Borrowing Figures Projected for Prediction Markets?
| Prediction Market Monthly Volume | Exceeded $13 billion, peaked $22 billion |
|---|---|
| AI/ML Adoption in Treasury | Increased significantly in 2025 |
| Regulatory Clarity for Event Contracts | Emerged in 2025, treated like derivatives |
Reconciling high-frequency data is crucial for accurate borrowing projections. Projecting the final US net borrowing figure for prediction markets necessitates a rigorous reconciliation process between daily (DTS) and monthly (MTS) Treasury data. The Daily Treasury Statements provide high-frequency, cash-based information, while the Monthly Treasury Statement offers definitive, accrual-based figures. Since the official MTS report is released after market close, analysts must nowcast the final number. This process involves modeling historical discrepancies and integrating the high-frequency DTS data to project the final MTS value.
Advanced analytics significantly enhance forecasting accuracy and market efficiency. Analysts leverage sophisticated statistical models, such as SARIMA, and advanced machine learning techniques, including Gradient Boosting Machines, integrating macroeconomic variables to enhance forecasting accuracy. The widespread adoption of artificial intelligence (AI) by treasury professionals in 2025 for predictive analytics underscores its importance in generating high-confidence forecasts and driving market efficiency. These sophisticated reconciliation and forecasting models provide an information edge, leading to rapid price convergence and increased market efficiency as final data becomes available.
Prediction markets grew substantially, integrating into financial infrastructure. Prediction markets experienced significant growth in 2025, with monthly trading volumes exceeding $13 billion. These markets evolved into integrated tools for hedging complex economic outcomes due to emerging regulatory clarity. This shift allowed for more granular predictions and facilitated their embedding into financial infrastructure, supporting their role in providing valuable market signals.
9. What Could Change the Odds
Key Catalysts
Several key catalysts drove the increase in US debt during 2025 [^] . Major legislative actions, such as the "One Big Beautiful Bill Act" (OBBBA) passed in July 2025, were primary factors [^]. This act not only raised the debt limit by $5 trillion but also included extensions of 2017 tax cuts and increased spending on defense, homeland security, and immigration, which the Congressional Budget Office (CBO) estimated would increase deficits by $3.4 trillion over the subsequent decade [^]. Furthermore, continued growth in mandatory spending for entitlement programs like Social Security and Medicare also contributed to the rising debt [^]. The cost of servicing the national debt also rose significantly, with the average interest rate on federal debt more than doubling by July 2025 compared to January 2022, leading to higher net interest payments [^]. The Treasury Department also increased its marketable borrowing estimates to replenish cash balances after debt ceiling constraints [^]. While a stronger-than-expected economy or new deficit reduction legislation could have potentially tempered debt growth, the CBO projected moderate GDP growth, and any deficit-reducing policies in 2025 were largely offset by other spending [^]. However, increased tariff revenue from new implementations in 2025 did provide some minor fiscal relief, slightly reducing projected deficits [^].
Key Dates & Catalysts
- Expiration: April 01, 2026
- Closes: April 01, 2026
10. Decision-Flipping Events
- Trigger: Several key catalysts drove the increase in US debt during 2025 [^] .
- Trigger: Major legislative actions, such as the "One Big Beautiful Bill Act" (OBBBA) passed in July 2025, were primary factors [^] .
- Trigger: This act not only raised the debt limit by $5 trillion but also included extensions of 2017 tax cuts and increased spending on defense, homeland security, and immigration, which the Congressional Budget Office (CBO) estimated would increase deficits by $3.4 trillion over the subsequent decade [^] .
- Trigger: Furthermore, continued growth in mandatory spending for entitlement programs like Social Security and Medicare also contributed to the rising debt [^] .
12. Historical Resolutions
No historical resolution data available for this series.
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